Effect of using different irrigation levels and seaweed extract concentrations on the growth, yield and pods quality of green bean (Phaseolus vulgaris L.) [electronic resource]

Includes bibliographic refrence

The present study was carried out in a private farm at Meet Assas, Samanoud, Elgharbia Governorate,
Egypt, during the two fall seasons of 2014 and 2015. The experiment was conducted to investigate the
effect of three irrigation water levels mainly 60, 80 and 100 % of crop evapotranspiration (ETC) and
seaweed extract as a foliar spray at the concentrations of 400, 600 and 800 ppm and their interaction on
the growth, yield and pod quality of green bean (Phaseolus vulgaris L.) cultivar Bronco. The obtained
results showed that plant height and the number of leaves and pod weight and length as well as leaf
relative water content significantly increased with using the irrigation level at 100% of Etc and the
seaweed extract at concentration of 800 ppm. The same trend was obtained for pod contents of total
protein, N, P and K. On the other hand, the highest values of total chlorophyll content in the leaf in
addition to total yield as weight and number of pods per plant resulted from the irrigation levels at 80%
and 100% of Etc and the seaweed extract concentration of 800 ppm. While, leaf proline content and pod
content of ascorbic acid significantly increased with decreasing irrigation water level to 60% in the plants
sprayed with the concentration of 800 ppm seaweed extract. At the same time, the highest value of water
saturation deficit was obtained from applying the irrigation level at 60 % of Etc in the untreated plants
with seaweed extract. Also, it seems that the highest values of water use efficiency resulted from using the
level of 80% from Etc. It could be concluded that using the irrigation level at 80% of Etc and spraying the
plants with the seaweed extract at 800 ppm is considered a suitable application to increase the yield of
green bean with high water use efficiency

Summary in Arabic